Irene Margaret Vaught, 87, a retired kindergarten teacher in Prince George's County who later became a hostess and custodian at the Montgomery County Historical Society's mansion in Rockville, died of cardiac arrest Monday at the Rockville Nursing. Home. She had been in failing health since being struck by a car last Oct. 2.

Mrs. Vaught came to the Washington area in 1934 with her husband, William J. Vaught, a banker and insurance broker who died in 1950.

She taught kindergarten at the old College Park Elementary School from the early 1940s until her retirement in 1956.

In about 1967, she began living at the Montgomery County Historical Society's Rockville headquarters, the 19th century Dawson mansion, where she was employed as hostess until retiring a second time in about 1973.

Mrs. Vaught was born in Hugoton, Kan. She earned a degree in child psychology from the lowa State University of Science and Technology in 1912.

She was a lecturer with the Chautauqua educational and recreational assembly and was active in the Daughters of the American Revolution. She also was active in the Rockville Presbyterian Church and had served several terms as president of the Riverdale Woman's Club.

Survivors include a son, William C., of Miami; two daughters, Valerie Canfield, of Waterford, Mich., and Jeannette Stabler, of Rockville; a sister, Jeannette Adams, of Wichita, Kan.; 18 grandchildren and 27 great-grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the Rockville Presbyterian Church.